Rand former



Sept. 8, 1925.

A. E. AYER RAND FORMER 4 Sheets-Sheet 1 Filed March 14, 1923 &

flaw.

Sept. 8, 1925.

A. E. AYE R RAND FORMER 4 Sheets-Sheet 2 Filed March 14, 1923 witness.-

Sepi.8,1925. 1,553,126 A. E. AYER RAND FORMER Filed March 14, 1923 4 Sheets-Sheet 3 l7 a g I Sept. 8,1925.

A. E. AYER RAND FORMER Filed March 14, 1923 4 Sheets-Sheet 4 Patented Sept. 8, 1925.

UNITED STATES v p 1,553,12s PATENT OFFICE.

ALBERT n-AYER, or wI 'rHRor, MAssAcHnsE'r'rs, Assrenon; BY MESNE' ASSIGN- ME T-s, r THOMPSON-finance. 1N0; OF BROCKTON, MASSACHUSETTS, Acon- PORATION.

RAND FORMER.

"ApplicationfiledMarch 14, 1923. Serial No.625,089.

To all whomz't may concern. I p 1 I Be it known that I, ALBERT E. AYER, a citizen of the United States, residing at Winthrop, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Band Formers; and I do hereby declare the following .to be a full, clear, and exact description of the invention, such as'w'ill enable others skilled in the arttowhich it appertains to m'akeand use the same. 7 V v The present invention rlelates to an improvement in rand formers. I

The object of tl e nvention is to reorganize and improve machines for forming rands. To this end the present invention consists in the improved rand former hereinafter described and particularly defined in the claims. o

In, the accompanying drawings illustrating the preferred fo-rmof the invention, Fig. 1 is a plan of theimachine; Fig. 2 is a side elevation; Fig. 3. is a sectional elevation through the former shafts; Fig. 4 is an elevation, of the gearing and feed cam; 5 is aper'spective view ofthe top former roll; Fig. 6 is a'perspective view'of the bottom former rolltFigfi 7 is a top plan of the form- ..ing instrumentalities; Fig. 8 is a'bottom plan of the same with the parts in different position from that shown in] Fig. 7 Fig. 9 isa sectional elevation taken transversely of the former rolls showing a randabout to be introduced between them; Fig. 10 is a section taken on the line 10-710, Fig. 1; and Fig. 11

is a section taken onthe line ;111;1, Fig. 7 The illustrated embodiment of the invention is described as follows: The machine is provided with a base 10 which supports the 4 upper parts of the machine. On the base are mounted threestandards' 11, 12 and 13. The standards 11 and 12 are of the sameshape bolted'to the base 101' 'The' standard 11 is provided with a j ournal 14: and the standard 4 12 with a journal '15, to'support the 'main: shaft 16. *Themain shaft carries a gear 17 11 which is driven by a pinion18 onth'e power shaft 19 supported in; the bearing'20. ofthe standard v12 andth'e'bearing 21 of the standaid '13; which "latter su o ts the. outboard end of the power shaftfand 'isjbolte d to the; base. The power shaft 19 carries two pul- 'leys, a'tight'pulley 22 and a loose pulley'23,

I a belt shipper fork24 'niounted on theship-;

:Perslide 2? m n i yrsea s f 3 11 22 with'the shipper lever 27 which. affords provision for throwing the belt on and off. The shipper slide 25-is mounted on a'slide support 28, which is securedinlthe bracket 29 bolted to the cross piece 30 by the bolts 31. .The lever 27 iszpivotally mounted on a rearwardly'extending portion 32 of the'braeket 29 (See Figz2 i .l f The main shaft 16 carries on its outer'end the former died) whiclr'cooperates with a secondformer roll R (both. conveniently called? the former. rolls). located below 'it rmounted on the 'Sha'ft-35 carried in bearings in the swing frame 36', pivoted on the stud 87 supported: between the two standards 1.11

and12. Theswing frame is normally held upward by springs 38, the. follower-39 of which maybe adjusted to vary the pressure of the spring by the bolt 40 .screwed up through [the base 10 of the machine. The

two shafts 16 and'35, that is to say, the main or dieshaft. and the jformer roll shaft, are

geared together, being provided" with-pinions 41 and 42 which 'mesh with each other and are pinned fast to these shafts by drive pins,as shown in Fig. 3. The die D'and the former roll Rare both secured to their shafts so .as to be incapable of turning Ithereon, being. provided with dowel'holes which receive dowel pins on thecollars 43 and 44 formed on theishafts 16 and 35, respectively. The die D and the'forme'r 'roll R are held from endwise movement on their shafts by the nuts 45 and 46, the former being left-hand thread ,andthe) latter,v being. right-hand -thread,so that the 'nuts will not loosen in use. 1 i

' The former "die and former roll are. adapted to compressiand give final shape to the bent rand piece which is presented'to them by the f.eeder.. l 1

The feed table. 50 is aves with a...

benders '51 and .52,'..theben 'ling -surfaces of which areshown 'indotted lines in Fig. 7. :Thefeed plunger; 53 'is provided on its under Side. with a rand'; pusher .54, which consists of a downwardly extending elongated portionshown injbottomgplan in Fig."'8 and in sideelevation in Fig.0. Thepusher is over hung by the plunger, a} feature of construction which contributes to holdingi the rand piece-fiat as iti's presented to the forming rolls; The rand55 laidon the feed table 50 in the position'shown in dash andxdot li ni 7.? feed rlungerfigis provided with a forwardly extended rand engaging hold-down finger 56, which projects forward and engages the top inclined surface of the rand at the same time its inner 'thin edge is engaged by the rand pusher 54. The center of the rand is pushed forwardly by the plunger 53 and the forward edges of the rand engage the rear ends of the bending surface 57 of the formers 51 and 52. By reference to Fig. 7 it will be seen that after the plunger has advanced toward its forward position the rand is bent as shown in Fig. 8, as the central portion of the rand piece is pushed forward toward the nip of the former rolls (see Fig. 9). In Fig. Sthe rand is shown before it is bent as far as it will be bent at the time the die and former rolls engage it, at which time the tail ends of the-rand piece overlap. When the plunger has advanced to the extreme of its forward movement the rand holding fin- .ger 56 enters a slot 58 in the die D so that the rand is accurately'presented to the nip of the die former rolls. This die roll is longitudinally grooved on both sides of the sl0t,-as shown in Fig. 5,-l-i-kewise the former roll R is grooved, and their rand engaging surfaces are arranged in such relationto the stroke of the feed plunger 53 that the rand is brought to position between the die and former rolls ready to be gripped at that time by the extended surfaces of those rolls.

The plunger 53 is secured to a slide 59 by means of the bolts 60. The slide is a T- headed piece of metal received in a T-head slot .61 in the table 50, the T-head portion lying in the enlarged portion of the table slot, the other portion of the slide 59 being received in a narrower portion .62 of the slot. The slide 59 is-held in-place on the table 50 by means of the plate 63 which is wider than theslot 62 and is clamped on to the narrow portion of the T-headed slide 59 by means of the bolts 64. A pivot bolt 65'is secured to the slide 59 and a connecting rod or pitman 66 connects that slide with one arm 67 of the bell crank lever 68 pivoted on the stud 69 upon which it oscillates.

The other arm 70 ofthe bell crank lever is provided on its end with a cam ball 71. This ball isrotatably mounted on the stud 72 secured in the end of the bell crank lever 70* by the set screw 73. This ball 71 engages the'cam 745 which is-formed on a cam disk '75, secured to the gear 17 by means of bolts 7 6, which pass through slots in the cam disk and screw into the gear, so that the position of the cammay be'adjus'ted on thegear to time the motion of the feed with respect to the rotative position of the former rolls. The cam 74is anopencam, that is to say, it is a one-sidedcam, and its work is done in feeding the rand piece forward to the. former rolls. The feed plunger is returned by means of a spring S which is attached at piece as it. is presented to the rolls.

one end to the arm 7 O of the bell crank lever 68, and at the other end to a hook, the shank of which extends through a hol in the feed bracket B upon which the feed table 50 is mounted, the pressure of the spring being capable of adjustment by means of the thumb nut screwed on the end of the shank of the spring holding hook. The stud 69 is supported on the bracket 77 secured by a bolt 78 to the frame of the machine. v

A rand piece of the proper length having the triangular cross-section shown in Fig. 9, is laid ,on the table 50 and by the plunger is forced in between the former die and roll to be compressed and given a permanent set in its curved form substantially as shown in Fig. 8. These rand pieces vary in thickness, and therefore the lower rand former roll R is made capable of rising and falling to accommodate itself to the thickness of-the rand. A stop pin 79 supported in the cross piece 80 and capable of being adjusted in the cross-piece, affords a limit to the upward movement of the lower roll by engagement with a boss 81 on the swing frame 36 which carries the lower roll R. The stop piece is threaded through the cross-piece 80 and a set nut 82 secures it in place.

One of the import-ant features of the vention resides in the finger 56 carried by the end of the plunger 53, which holds the rand down so that it is flattened and presented in flat condition to the guides 51, which are provided with over-hanging lips 83 (see Fig. 11) and to continue to hold it flat so as thereby to present the rand properly to the nip of the former rolls. This finger 56 is a flat piece of metal supported in a slot cut in the plunger 53 and is secured in said slot by the screw 84.

The operation of the machine is as follows: When it is desired to start up the machine, the shipper lever 27 will be operated to throw the belt on the tight pulley 22. This will rotate the power shaft 19 and the pinion on the power shaft will rotate the main shaft 16 and thereby cause the formerrolls to be rotated. The cam on the gear 17 will operate the feed plunger and rand pieces laid on the table in front of the advancing plunger will be carried by the plunger against the guides 51, being held from vertical distortion by theoverhanging lips 83, and the rounded end of the rand piece will then be presented to the nip of the formerrolls D and B. These rolls are shaped as shown in Figs. 3 and 6, to engage and compress the bent rand and vided with a recess 85 in its surface which receives the extremeend of the bent rand As the rand emerges from between the rolls press and give permanent form to the rand,

not that the rand does not slightly expand again after it has emerged from between the former rolls, but the resulting formed rand is of horse-shoe shape and ready for attachment to the heel-pieces. It is prefer-red that the rand shouldbe corrugated or crimped in the usual crimping rolls before it is subjected to the action of this forming machine, as these corrugatlng rolls give initial bends to the rand which contribute to its uniform folding and bending into the desired horse-shoe shape.

Having thus described the invention, what is claimed is 1. A rand forming 'machine having, in combination, rand forming rolls having rand compressing surfaces, one of the rolls being provided with a peripheral groove, means for bending rand pieces and presenting them to the randforming rolls provided with a rand holding finger to hold the rand fiat when presented to the forming rolls, such finger being adapted to be received in the groove in the forming roll, and means for actuatlngthe parts.

2. A rand forming machine having, in'

' combination, rand forming rolls, a fixed tion to be engaged by the plunger, means having forming surfaces against which the rand piece is pressed and by which it is bent in the plane of the rand as it is presented by the plunger to the forming rolls, said plunger being provided with a finger to hold the rand piece fiat when bent and presented to the rolls, such finger being adapted to be received in the groove in the forming roll, and means for actuating the parts. I

4:. A rand forming machine having, in combination, rand forming rolls having rand compressing surfaces, a fixed table having its edge locatedclose t0 the nip of the forming rolls, said table being provided with stationary benders having bending surfaces, a feed plunger provided with a rand pusher and a hold down finger, the rand pusher being adapted to engage the edge of a rand piece and the finger to project over one side of the rand piece and hold it down on the table while it is pushed against the bending surfaces and presented to the rolls, and means for actuating the parts.

5. A rand forming machine having, in combination, a pair of rand forming rolls,

a fixed feed table having its edge adjacent to the nip of the rolls, stationary benders provided with overhanging lips mounted on the table, a feed plunger provided with a rand pusher, theplunger overhanging the pusher, the overhanging lips of the benders and the overhanging plunger contributing to hold the rand in one plane as the plunger advances and presents it to the nip of the forming rolls, and means for actuating the parts.

V 6.v A. rand forming machine having, in combination, a pair of rand forming rolls having rand compressing surfaces, a main shaft on which one of the rolls is mounted, a gear mounted on the main shaft, means for driving the gear, gearing connecting the two forming rolls, a feed plunger for feeding rand pieces to the rolls, a cam mounted on the gear on the main shaft and actuated thereby to operate the feed plunger tofeed rand pieces to the forming rolls, and means for actuating the parts.

ALBERT E. AYER. 

